22604423 has 4 divisors (see below), whose sum is σ = 23587248.
Its totient is φ = 21621600.
The previous prime is 22604419. The next prime is 22604431. The reversal of 22604423 is 32440622.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 22604423 - 22 = 22604419 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 982801 = 22604423 / (2 + 2 + 6 + 0 + 4 + 4 + 2 + 3).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22604453) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491378 + ... + 491423.
It is an arithmetic number, because the mean of its divisors is an integer number (5896812).
Almost surely, 222604423 is an apocalyptic number.
22604423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
22604423 is a deficient number, since it is larger than the sum of its proper divisors (982825).
22604423 is an equidigital number, since it uses as much as digits as its factorization.
22604423 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 982824.
The product of its (nonzero) digits is 2304, while the sum is 23.
The square root of 22604423 is about 4754.4108993649.
The cubic root of 22604423 is about 282.7468716779.
The spelling of 22604423 in words is "twenty-two million, six hundred four thousand, four hundred twenty-three".